JVC KS-FX893 Service Manual Download Page 23

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1-23

KS-FX893

KIA7810PI (IC902) : Regulator

1. Pin layout

2. Block diagram

1 2 3

1 INPUT

3 OUTPUT

2 GND

R18

Q14

Q15

R13

R21

Q16

R12

R17

Q17

R11

Q12

Q13

Q10

R10

R15

R14

R16

Q11

R20

R19

AMP

AGC

Detector

BPF

I/V

conversion

Vcc

Comp

22k

ohm

magnetic shield

Vcc

Rout

GND

for

trimming

circuit

RPM6938-SV4 (IC602) : Remote control receiver

Summary of Contents for KS-FX893

Page 1: ... CASSETTE RECEIVER No 49763 Nov 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN LTD KS FX893 KS FX893 Area Suffix UF China Contents Safety precaution Disassembly method 1 2 1 3 Adjustment method Description of major ICs 1 11 1 15 24 ...

Page 2: ...ft over on some parts of the chassis Therefore pay attention to such burrs in the case of preforming repair of this system Safety precaution Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check ...

Page 3: ...chassis two joints b on the right side and one joint c from upside then detach the front chassis toward the front side Removing the front chassis See Fig 1 2 Removing the heat sink See Fig 3 1 Remove the three screws B attaching the heat sink on the left side of the body and remove the heat sink b a a b c A B B B Heat sink Fig 2 Fig 1 Fig 3 Front chassis ...

Page 4: ... Remove the bottom cover Remove the seven screws B attaching the rear panel and one screw C attaching the pine jack on the back of the body Removing the main amplifier board assembly See Fig 6 1 2 3 4 5 Remove the front chassis Remove the bottom cover Remove the rear panel Remove the two screws D attaching the main amplifier board assembly on the top cover Disconnect connector CP701 on the main am...

Page 5: ...move the bottom cover Remove the main amplifier board assembly Remove the fore screws F attaching the cassette mechanism assembly from the top cover Removing the control switch board See Fig 8 and 9 1 2 3 Remove the front panel unit from the main body Remove the four screws G attaching the rear cover on the back of the front panel unit Remove the control switch board from the front panel unit ...

Page 6: ...ection of the arrow 1 2 3 4 Removal of the cassette mechanism Removing the head amplifier board See Fig 1 and 2 Disconnect the 6pin wire from connector CN402 and the card wire from CN403 on the head amplifier board Refer to Fig 1 and 2 Remove the four screws B on the bottom of the cassette mechanism 1 2 Removing the cassette mechanism assembly See Fig 1 to 3 Fig 1 Cassette mechanism ass y Head rel...

Page 7: ...h the one side of the sub chassis Then release the sub chassis from the tab f 1 2 Removing the sub chassis See Fig 6 Prior to performing the following procedure remove the head relay board the load arm and the sub chassis Remove the screw E attaching the reinforce bracket Remove the reinforce bracket Push the tab g fixing the cassette holder in the direction of the arrow and open the cassette hold...

Page 8: ...ction of the arrow 1 2 Removing the reel disc board See Fig 10 Unsolder the two soldering l of the motor and the sub motor Release the sub motor from the three tabs m Push the sub motor upward and pull out it Remove the belt on the bottom of the cassette mechanism assembly and remove the two screws G attaching the motor 1 2 3 Removing the motor and the sub motor See Fig 10 and 11 The motors can be...

Page 9: ...relay board the load arm the sub chassis the cassette holder and the holder arm Disengage the part n inside of the reel driver which engages with the shaft using a pincette or something like that Then remove the reel driver from the shaft Remove the reel driver spring and the reel table 1 2 Removing the reel disc ass y See Fig 12 to 14 When reassembling make sure to use a new slit washer ATTENTION...

Page 10: ...that Remove the reel disc ass y as with the reel disc ass y 1 2 3 Removing the reel disc ass y See Fig 12 to 15 Do not break the front panel tab fitted to the metal cover ATTENTION Prior to performing the following procedure remove the reel disc ATTENTION Fig 15 Push aside the gear and reattach the reel disc Ass y Reel disc ass y ...

Page 11: ... conditions Amplifier section Power supply voltage DC14 4V 10 5 16V Load impedance 4 2Speakers connection Line out 20k Standard volume position Balance and Bass Treble volume Fader Center Indication 0 Loudness Dolby NR Sound Cruise Off Volume position is about 2V at speaker output with following conditions Playback the test tape VT721 AM mode 1000kHz 62dB INT 400Hz 30 modulation signal on receivin...

Page 12: ...n view Cassette mechanism Surface Arrangement of adjusting test points Motor assembly Tape speed adjust Playback head Azimuth screw B Reverse Azimuth screw B Reverse Azimuth screw A Forward Azimuth screw A Forward Playback Head ...

Page 13: ...cord EXTKSRT002 18P 18 pin extension cord For connection between mechanism assembly and main board assembly Check for mechanism driving section such as motor etc Disassembly method 1 Remove the bottom cover 2 Remove the front panel assembly 3 Remove the top cover 4 Install the front panel 5 Confirm that current is being carried by connecting an extension cord jig Note Available to connect to the C...

Page 14: ...eak of Lch Rch output with Azimuth screw A For Oscilloscope litharge corrugation set 45 as standard b At Reverse play mode make adjustment of peak of Lch Rch output with Azimuth screw B For Oscilloscope litharge corrugation set 45 as standard c With AC volt meter confirm the difference of output for 4ch between Lch Rch at forward play mode and Lch Rch Reverse play mode being within 3 0dB d After o...

Page 15: ...L IAL Serial data input output Ground output left rear output left front Treble control capacitor left channel or input from an external equalizer Bass control capacitor left channel or output to an external equalizer Bass control capacitor left channel Input volume 1 left control part Input loudness left control part Output source selector left channel Not used Not used Input C left source Not us...

Page 16: ...cal volume Clock output for electrical volume information Door open detect input Power ant ON signal input Mute signal input Non connection DIMMER control signal output Non connection Non connection Non connection Non connection Non connection Non connection Non connection Diode matrix output port for initial establishing Diode matrix output port for initial establishing Diode matrix output port f...

Page 17: ...itch for detecting tape end position Detecting mode position input Switch for detecting forward reverse H FWD L REV MS input port Station detector Stereo signal input H SD Front panel detect Connect to encoder 1 Connect to encoder 2 Cut in signal detecting port from J Bus information Non connection FM AM mode switching signal port H FM L AM Non connection Non connection Non connection Back up powe...

Page 18: ...UT 2 PWR GND2 R F IN 3 IN 4 PRE GND ON TIME C Muting ON Time Control Circuit Protective circuit Protective circuit Mute circuit Ripple Filter Stand by Switch N C 0 22 F 2200 F 0 022 F 0 22 F TAB 5V ST ON 47 F 0 22 F 0 22 F 22 F Mute 10K 3 3 F OUT 3 OUT 3 Low Level Mute ON PWR GND3 OUT 4 OUT 4 PWR GND4 LA4743K IC301 Power amp 1 Block diagram ...

Page 19: ...front Rch Power input Output for rear Rch Power GND Output for rear Rch Ripple filter Rear Rch input Front Rch input Signal GND Front Lch input Rear Lch input Power on time control Output for rear Lch Power GND Output for rear Lch Power input Output for front Muting control input Output for front Power GND Non connection 1 2 3 4 5 6 7 8 9 10 GND OUT1 P1 VZ IN1 IN2 VCC1 VCC2 P2 OUT2 Input Output Mo...

Page 20: ...RIN2 PBGND PBFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 I O O I I I O O I I I Resistance for setting the reference Ground TAPE input Output reference Playback equalizer amplifier output Playback equalizer amplifier capacitance Playback equalizer amplifier feedback Playback equalizer amplifier input Playback equalizer amplifier ground Playback equalizer amplifier input Center Playback equalizer ampli...

Page 21: ...4Y 1C 2A 2C 3A 3C 4A 4C Input Output C A X Y Z L L L H H H H 1 1C 2 1A 3 1Y 4 2C 5 2A 6 2Y 7 GND Vcc 4C 4A 4Y 3C 3A 3Y TOP VIEW 14 13 12 11 10 9 8 1 Pin arrangement 2 Pin function 3 Block diagram HD74HC126P IC801 Changer control ...

Page 22: ...5 6 7 8 9 10 11 12 ILL MODE2 MODE1 STB VDD AMP VCC ANT COM AM FM GND 10V power supply for illumination When 5V is input becomes AM and the antenna output is turned on When 5V is input becomes AM and the output of FM is switched When 5V is input outputs to ILL COM and AMP It is 0V usually 5 6V power supply Power supply supply to remote amplifier Back up connects with ACC with it Power supply supply...

Page 23: ...2 GND R4 R18 R8 Q8 R9 Q9 Q14 Q15 R13 R21 Q16 R12 R17 Q17 R11 Z1 R5 R6 R7 Q12 Q13 Q10 R1 Q1 Q7 R10 R3 Q5 Q6 R15 R2 Q2 R14 Q3 Q4 C1 R16 Q11 R20 R19 AMP AGC Detector BPF I V conversion PD Vcc Comp 22k ohm magnetic shield Vcc Rout GND for trimming circuit RPM6938 SV4 IC602 Remote control receiver ...

Page 24: ...Must be connected to VDD1 when a 1 2 bias drive scheme in used Power supply connection Oscillator connection An oscillator circuit is formed by connecting an external resistor and capacitor to this pin Display off control input Chip enable input Synchronization clock input Serial data input DIMMER Control signal output Non connect O O I I I O I I I I O Pin No Symbol Description I O 2 Pin functions...

Page 25: ...1 25 KS FX893 M E M O ...

Page 26: ... KS FX893 KS FX893 VICTOR COMPANY OF JAPAN LIMITED MOBILE ELECTRONICS DIVISION PERSONAL MOBILE NETWORK BUSINESS UNIT 10 1 1Chome Ohwatari machi Maebashi city 371 8543 Japan No 49763 Printed in Japan 200211 ...

Page 27: ...SCHEMATIC DIAGRAMS CASSETTE RECEIVER KS FX893 Area Suffix UF China Contents Block diagram Standard schematic diagrams Printed circuit boards 2 1 2 2 2 5 7 CD ROM No SML200211 KS FX893 ...

Page 28: ...r on some parts of the chassis Therefore pay attention to such burrs in the case of preforming repair of this system Safety precaution Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check ...

Page 29: ...ANDBY REEL PULSE TAPEIN MODE CN402 CN401 CP701 SUBMO SUBMO MODE STANDBY TAPEIN MOTOR REEL 14V FF REW F R DOLBY GND MSOUT Rch S GND Lch 9V COMMON L FWD L FWD R REW L REW R COMMON R MODE STANDBY TAPEIN MOTOR REEL SUBMO SUBMO FF REW F R DOLBY MSOUT REGULATOR IC902 JVC BUS IC801 CHANGER CONTROL CP801 CONTROL SCK SI SO MEMORY JBUS_SO JBUS_IO JBUS_INT JBUS_SCK FM OSC IFC S METER SD ST IFREQ POWER ANT PW...

Page 30: ...N5401 TU 15 2200 16 KRC102M T 1SS133 T2 27K AN80T05 KTA1267 YG T 27K QGB1214J1 18S QNZ0007 002 HD74HC126P QNZ0095 001 47K 100K 100 100K 10K 0 047 QAX0406 001Z 10 16 47uH KTA1267 YG T 47K 47K 4 7K 4 7K 4 7K 4 7K 47K 4 7K 47K 47K 47K 47K 56K SLR 56MC3F 47K 2 2K 2 2K KIA7810PI QNZ0002 001 0 1 KTC3199 GL T 2SA1706 ST T 47K 43K 11K 6 8K 2 4K 0 1 10 16 KRA102M T KRC102M T 100 6 3 0 22 1A3G T1 1A3G T1 4 ...

Page 31: ...R406 R407 R405 C404 R404 C403 C402 VR402 R413 C407 C417 R422 R423 D402 R403 R425 C423 R424 R412 R417 R402 C401 C405 C408 0 015 0 01 22 16 0 015 910K 0 1 DTC114EKA X 2SB1322 RS T VMP3501 001 LB1641 0 01 0 1 QGB1214K1 18S 390 15K CXA2560Q QGF1219F1 10S 0 1 0 1 0 1 MA3047 H X 33K 22 16 0 47 50 220P 3 9K 100P 0 01 22K 180 180 100K 100p 100K 100p 100p 33K 18K 100P 0 1 3 3K 47K 1A3G T1 100K 33 10 16 3 3...

Page 32: ... 1 8W 390 1 8W 330 1 8W 560 1 8W NSPW310BS BRS NSPW310BS BRS NSPW310BS BQ 430 1 8W 430 1 8W 1SS355 X 1SS355 X 1SS355 X 1SS355 X LCDCE LCDDA LCDCL DIMMER GND 10V ACC5V LCDDA COM3 LCDCL LCDCE COM2 REMOCON ACC5V COM1 10V ENC1 ENC2 KEY1 KEY2 KEY0 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39 S40 S41 KEY0 KEY1 KEY2 S42 S63 S64 S65 S66 S67 S68 ENC2 ENC1 S28 S27 S26 S68 S67 S66 S65 ...

Page 33: ...25 R331 R332 R333 R334 R335 R341 R342 R343 R344 R345 R351 R352 R353 R354 R355 R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 R711 R712 R713 R714 R716 R717 R718 R719 R720 R721 R722 R723 R724 R725 R727 R728 R729 R730 R731 R732 R733 R734 R735 R736 R737 R738 R739 R741 R742 R801 R802 R803 R804 R805 R806 R807 R808 R809 R811 R812 R813 R814 R881 R882 R901 R902 R903 R904 R905 R906 R907 R908 R909 R976 R9...

Page 34: ...R332 R333 R334 R335 R341 R342 R343 R344 R345 R351 R352 R353 R354 R355 R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 R711 R712 R713 R714 R716 R717 R718 R719 R720 R721 R722 R723 R724 R725 R727 R728 R729 R730 R731 R732 R733 R734 R735 R736 R737 R738 R739 R741 R742 R801 R802 R803 R804 R805 R806 R807 R808 R809 R811 R812 R813 R814 R881 R882 R901 R902 R903 R904 R905 R906 R907 R908 R909 R976 R977 R978 ...

Page 35: ...2 B423 B443 B442 B422 B436 B421 B435 B471 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C416 C417 C418 C419 C421 C422 C423 C424 C425 CJ401 B405 B403 D401 D402 IC402 Q401 Q402 Q403 R401 R402 R403 R404 R405 R406 R407 R408 R 4 0 9 R410 R411 R412 R413 R414 R415 R416 R417 R418 R420 B413 R422 R423 R424 R425 R426 VR401 VR402 IC401 CJ403 B412 B407 B401 B408 B410 B406 B409 B404 C415...

Page 36: ...KS FX893 ...

Page 37: ... as service parts Contents Exploded view of general assembly and parts list Block No M1 Cassette mechanism assembly and parts list Block No MP Electrical parts list Block No 01 03 Packing materials and accessories parts list Block No M3 M5 KS FX893 3 2 3 5 3 10 3 14 Areas suffix UF China ...

Page 38: ... 2 6 5 9 4 11 56 55 77 11 6 6 53 40 54 48 1 8 6 12 13 10 13 12 14 14 69 68 26 64 78 62 63 59 80 60 58 61 21 35 28 32 27 24 29 25 33 23 30 20 16 57 57 17 18 37 36 22 19 34 31 65 66 67 72 74 75 76 73 73 71 70 15 Mecha control board Main board Front board A B C 42 38 39 45 44 46 41 47 50 49 43 52 51 81 ...

Page 39: ...OPEN LEVER 1 22 FSKS3015 001 LOCK LEVER O L 1 23 VKS3798 002 RELEASE LEVER 1 24 VKS3793 001 LOCK LEVER TOP 1 25 VKS3794 003 LOCK LEVER L 1 26 VKS3795 002 LOCK LEVER R 1 27 VKS5563 001 GEAR 1 28 VKZ4786 002 OIL DAMPER 1 29 FSKW4012 001 T SPRING 1 FOR L LEVER TOP 30 VKW5264 005 T SPRING 1 FOR RELEASE LEVER 31 VKW5262 001 T SPRING 1 FOR L LEVER R 32 QYSDSF2006M SCREW 1 DAMPER L LEVER R 33 VKW5263 002...

Page 40: ...1 RUBBER CONNECTOR 1 60 QNZ0450 001 RUBBER CONNECTOR 1 61 GE30114 001A LCD CASE 1 62 FSJK3028 001 LCD LENS 1 63 FSYH4061 001 LIGHTNG SHEET 1 64 FSKS3013 001 LENS CASE 1 65 GE30846 001A NAME PLATE 1 66 GE40103 002A REG BRACKET 1 67 GE40107 002A HEAT SINK 1 68 QMFZ047 150 T FUSE 1 69 VMA4652 001SS EARTH PLATE 1 70 FSKL4024 001 IC BRACKET 1 71 FSKM3010 017SSF REAR BRACKET 1 72 QYSDST2606Z SCREW 1 REA...

Page 41: ...84M SW 522B FG 84M CFD 409 76 107 103 104 105 24 91 26 47 40 66 65 39 75 109 106 11 1 32 46 44 113 114 111 87 86 84 82 85 33 45 22 38 21 71 34 3 30 48 27 107 67 16 96 42 41 10 17 95 93 94 40 49 75 66 39 25 117 106 64 63 4 28 50 5 68 12 108 55 43 110 113 111 51 35 60 36 72 13 9 61 37 74 23 2 59 99 97 98 100 101 102 73 Cassette mechanism assembly and parts list Block No M M M P CDS 801 A A B B D D c...

Page 42: ...CT CAM PLATE 1 28 1 0801 1012S CASSETTE HOLDER 1 30 1 0801 1020S REINFORCE BRKT 1 32 1 0101 2056S IDLE PULLEY A1 1 33 1 0801 2004S REDUCTION GEARA 1 34 1 0801 2005S REDUCTION GEARB 1 35 1 0801 2006S SPG HOLDER F 1 36 1 0801 2007S FRICTION GEARPL 1 37 1 0801 2008S FRICTION GEARFF 1 38 1 0801 2009S MODE GEAR 1 39 1 0801 2010S REEL SPINDLE 2 40 1 0801 2011S REEL DRIVER 2 41 1 0801 2014S GEAR BASE ARM...

Page 43: ...7009 0S M MOTOR WIRE 1 BLACK 94 10801 7009 1S M MOTOR WIRE 1 RED 95 10801 7010 0S S MOTOR WIRE 1 ORANGE 96 10801 7010 1S S MOTOR WIRE 1 BROWN 97 10801 7015 0S HEAD WIRE BLACK 1 98 10801 7015 1S HEAD WIRE BROWN 1 99 10801 7015 2S HEAD WIRE RED 1 100 10801 7015 3S HEAD WIRE ORANG 1 101 10801 7015 4S HEAD WIRE YELLO 1 102 10801 7015 5S HEAD WIRE WHITE 1 103 1 0801 7016S HEAD PCB 1 104 1 0801 7025S CO...

Page 44: ...3 8 KS FX893 SW 902 SW 902 SW 902 SW 902 SW 902 FG 84M FG 84M CFD 409 LEN 315Y2 SW 522B SW 902 FG 84M FG 84M FG 84M FG 84M FG 84M EP56 3 1 2 9 10 11 13 4 5 12 Grease point 1 2 ...

Page 45: ...3 9 KS FX893 21 22 27 25 35 45 49 51 41 40 42 43 59 47 Grease point 2 2 ...

Page 46: ...0 20 C 318 QCFB1HZ 104Y C CAPACITOR 10MF 80 20 C 319 QCFB1HZ 104Y C CAPACITOR 10MF 80 20 C 321 QCBB1HK 471Y C CAPACITOR RIGHT C 322 QERF1HM 225Z E CAPACITOR 2 2MF 20 50V C 331 QCBB1HK 471Y C CAPACITOR LEFT C 332 QERF1HM 225Z E CAPACITOR 2 2MF 20 50V C 341 QCBB1HK 471Y C CAPACITOR RIGHT C 342 QERF1HM 225Z E CAPACITOR 2 2MF 20 50V C 351 QCBB1HK 471Y C CAPACITOR LEFT C 352 QERF1HM 225Z E CAPACITOR 2 ...

Page 47: ...J 473Y C RESISTOR 47K 5 1 4W R 176 QRE141J 473Y C RESISTOR 47K 5 1 4W R 195 QRE141J 100Y C RESISTOR 10 5 1 4W R 241 QRE141J 154Y C RESISTOR 150K 5 1 4W R 242 QRE141J 154Y C RESISTOR 150K 5 1 4W R 243 QRE141J 184Y C RESISTOR 180K 5 1 4W R 244 QRE141J 223Y C RESISTOR 22K 5 1 4W R 245 QRE141J 123Y C RESISTOR 12K 5 1 4W R 246 QRE141J 470Y C RESISTOR 47 5 1 4W R 247 QRE141J 102Y C RESISTOR 1 0K 5 1 4W ...

Page 48: ... V06Z TACT SWITCH TU 1 QAU0205 002 TUNER X 701 QAX0406 001Z CRYSTAL Item Parts number Parts name Area Electrical parts list Mecha control board Remarks Block No 02 A C 401 NDC31HJ 101X C CAPACITOR C 402 NDC31HJ 101X C CAPACITOR C 403 NDC31HJ 101X C CAPACITOR C 404 NDC31HJ 101X C CAPACITOR C 405 NDC31HJ 101X C CAPACITOR C 406 NDC31HJ 101X C CAPACITOR C 407 NDC31HJ 101X C CAPACITOR C 408 NDC31HJ 101...

Page 49: ...1X MG RESISTOR R 608 NRSA63J 681X MG RESISTOR R 609 NRSA63J 911X MG RESISTOR R 611 NRSA63J 122X MG RESISTOR R 612 NRSA63J 681X MG RESISTOR R 613 NRSA63J 561X MG RESISTOR R 614 NRSA63J 681X MG RESISTOR R 615 NRSA63J 911X MG RESISTOR R 616 NRSA63J 122X MG RESISTOR R 617 NRSA63J 152X MG RESISTOR R 620 NRS181J 821X MG RESISTOR R 621 NRS181J 471X MG RESISTOR R 622 NRS181J 271X MG RESISTOR R 623 NRS181J...

Page 50: ...3 14 KS FX893 Packing materials and accessories parts list Block No M M M 3 Block No M M M 5 A1 A11 A12 A10 KIT A3 A7 P6 P7 P3 P1 P4 P5 P2 P7 A13 ...

Page 51: ...6 CARTON BOX 1 P 7 CUSHION 2 Item Parts number Parts name Area A Parts list Accessories Q ty Description Block No M5MM A 1 INST BOOK 1 A 3 VKZ4027 202 PLUG NUT 1 A 4 VKH4871 001SS MOUNT BOLT 1 A 5 VKZ4328 001 LOCK NUT 1 A 6 WNS5000Z WASHER 1 A 7 FSKL4010 002 HOOK 2 A 10 QAM0337 001 16P CORD ASSY 1 A 11 FSJD2034 001SSF TRIM PLATE 1 A 12 FSKM2004 202SSF MOUNTING SLEEVE 1 A 13 FSJB3001 30A HARD CASE ...

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